Burner.



No. 788,727 PATENTED'I-EB. 28, 1905. J. N. LEAUH.

BURNER.

APPLICATION FILED MAR. 2a, 1903.

2 SHEETS-SHEET 1.

No. 783,727. PATENTED FEB. 28. 1905.

' If. N. LEAGH.

BURNER. APPLICATION FILED MAB- 23. 190a.

ZSHEETH-SHEET 2.

cm S QMW rrn Tamas Patented February 28, 19015.

JOHN N. LEAOH, OF MELROSE, MAESSAOHUSETTS, ASSIGNOR TO NATIONAL OIL HEAlING OOll/lPANi, A OOltlORAllON OF AflrllNll HUMMER.

SPECIFICATION forming part of Letters Patent No. 783,727, dated February28, 1905,

Application filed March 23, 1903. Serial No. 149,078.

burner oi this class embodying therein the Feature of two burner-plates and appurtenances necessary thereto havlngseparate and ii'idependent fuel-supply systems controlled by substantially independent sources oi heat, as set forth in my application for Letters Patent liled October 22, 1902, and given the Serial No. 128,254, especially adapted for use in a connection where the crown-sheet or inclosing top plate is of necessity in such proximity to the burner-plates as to necessitate a burner structure occupying a limited space.

A further object is to provide a burner of such type wherein the vaporizer oi the primary burner is so disposed as to present to the action of the liame a greater area of heating-surface and to prevent condensation of the carbureted hydrogen prior to the admixture therewith of atmospheric air and the discharge thereof into the primary-burner mixing-chamber.

A still further object is to so construct said vaporizer and said primary burner and its connections that the said vaporizer i'nay be quickly removed and replaced by another in case of material clogging or other accident thereto.

A still further object is to provide a burner wherein the arrangement of mixing-tubes and air-inlets will be such as to introduce the air to the carbureted hydrogen at a comparatively high temperature to prevent condensation of said gases, and thus increase the combustibility of said gases, and at such points as to insure a proper amount of air being drawn in with the gases to the mixing-chamber of each burner.

A still further object is to provide a burner wherein the secondary burner will be readily ignited from the primary burner, and the latter may when desired be so inclosed as to partially confine the gases therefrom to insure 55 a more perfect combustion of the said gases adjacent thereto.

A still further object is to provide a burner simple in construction which is capable ol being quickly assembled or taken apart to la- 6O cilitate repairs or renewal of worn parts.

The invention consists in these novel features of construction in the type of burner claimed, broadly, in my aforesaid application, hereinafter set forth and described, and more 6 5 particularly pointed out in the claims hereto appended.

Referring to theaccompanying drawings, Figure l is a plan view of a burner embodying my invention, the hood of the primary 7 burner being removed. Fig. 2 is a side sectional elevation on the line 2 2 of Fig. l, the hood of the primay burner being in place. Fig. 3 is a view of the primary burner and hood, showing the mixing-tube and a portion 75 of the mixing-chamber located. beneath said tube each in horizontal section, said sections being on parallel planes to more clearly disclose the relation of the mixing-tube, the airinlet, the mixing-chamber contiguous thereto, 30 and the discharge end of the primary-burner vaporizer, and portions of the super-heatingretort. Fig. 4 is an elevation of the outside of the burner, and Fig. 5 is a modified form of mixing-tnbe for the secondary burner.

Like letters refer to like parts throughout the several views.

My invention contemplates the use 0.1. an outer casing (t, inclosing the burner and extending above it to form the combustion- 9 chambelf. \Vithin this casing I arrange a burner-plate l), provided with any desired form of openings 1/ therein and having an individual mixing-chamber (Z. The plate 7) is cut away to form or formed with an approxi- 95 mately central opening therein extending diametrically across it, and closing this opening is another burner-plate 0, also having any desired form of openings 0 0' therein and an independent miXing-charnber e. The mixingchamber 6 projects into the mixing-chamber (Z to a limited extent, but not sufliciently to prevent a free circulation of gases through out said chamber, and with the burner-plate 0 is detachably secured to the burner-plate 7).

For convenience of expression the burnerplate 0 will hereinafter be referred to as the primary burner and the burner-plate b as the secondary burner, and the various elements related particularly thereto will be designated either primary or secondary, as the case may be. Each of said burners is provided with an independent fuel-sup ply systemthat is to say, that when both burners are lighted each is capable of generating its own fuel-supply independently of the other, although it is apparent that the contiguity of the various parts and the particular arrangement of the secondary fuel-supply system will result in the heat from both flames acting on both systems simultaneously and possibly such an intermixture of flames as to have both flames so act. As described in my application aforesaid, the primary-burner system is designed particularly to sustain a permanent flame in the primary burner, and such action as the secondary burner has thereon is merely incidental to a construction necessary to accomplish the purposes and objects of the primary burner.

The primary-burner fuel-supply system comprises a vaporizer in, which lies in close juxtaposition to and is substantially parallel With the burner-plate c and conterminous with the burner-openings 0, so as to be subjected throughout its entire length to the direct action of the flames therefrom. Fuel-oil is supplied thereto from a tank (not shown) by means of a pipe k. The supply of oil so fed is regulated by the needle-valve k, which also serves to prevent clogging and to facilitate cleansing of same while in use. The said vaporizer is passed through an opening in the casing a, the valve-stem and pipe connection being outside said casing. The said connection may be made in any desired manner, although preferably an ordinary nipple is used. The discharge end of said vaporizer projects through an opening into the mixing-tube l and is not secured in any way other than frictionally, that it maybe withdrawn to facilitate repairs or the substitution of a new vaporizer at any time in case of the material clogging or disarrangement thereof by simply disconnecting the pipe It and vaporizer if. The mixing-tube Z is arranged entirely Within the combustion-ehamber f and has communication with the outside air through the inlet-pipe Z, which extends downward through the mixingchambers (Z and 6, opening outward below the casing rt and inward directly below the discharge end of the vaporizer Zr. The said mixing-tube Z draws its supply of air through the inlet-pipe Z and has no communication with said combustion-chamber and discharges into the primary mixing-chamber a only, the gases passing on each side of the inlet-pipe Z to the burner-plate 0,

To partially confine the gases passing through the openings 0 0 in the burner-plate c, I provide a hood it, having a plurality of openings it /i therein to insure communication of all parts-of the combustion-chamberf with each other and the ignition of the gases from the secondary burner from the flame of the pri mary burner. This hood it is made detachable, as by the lugs and screws, (shown in Fig. 3,) in order that it may or may not be used, as desired.

The secondary-burner fuel-supply system comprises a vaporizer consisting of two seetions 2" i of a continuous pipe '2', communicating with a supply-tank. (Not shown.) These sections are respectively disposed directly above the secondary burner 6 and the primary burner 0, and the fuel-oil passing therethrough is subjected successively to the action of the flames of the secondary and the primary burners. For convenience these sections will be termed the vaporizing-retort and the superheating retort. The superheating-retort is disposed on each side of the primary burner 0 and terminates in a spraying-nozzle 2', discharging into a mixing-tube j, establishing communication between the secondary mixing-cham ber (Z and the atmosphere. Arranged within some portion of the pipe is a choke or retard ficonsisting of a quantity of Wire-gauze or some equivalent substance which will filter and check the too rapid feed of the oil.

The outer casing It is provided with a plurality of openings at 21, provided with shutters m a, respectively, by means of which openings a hand-torch may be inserted beneath the vaporizer Z5 to produce the initial charge for the primary burner, and the secondary burner may be inspected to ascertain if it is burning properly.

In the form shown the crown-plate of the boiler g acts as a confining-plate to confine and deflect the gases to insure their ignition and combustion. In other relations another member may serve this same function.

In Fig. 5 l have shown a construction of the mixing-tube in which the nozzle is fitted to and projected into an enlarged chamber forming a part of the mixing-tube, the said tube being provided with a downwardly-projected air-inlet pipe j, directly above which the nozzle j terminates, thus causing air to be drawn from below the burner.

The operation of the heretofore-described rea /av sisting of an elongated absorbent body charged with alcohol is inserted through the opening m and placed beneath the vaporizer The valve 71: is then opened and oil fed to the heated vaporizer 7?. The heat of the said vaporizer and the continued flame from the torch vaporizes the fuel-oil, and in this state it is discharged into the mixing-tube l at a point above the air-inlet Z, the passage of the gas over which draws with it sullicient atmospheric air to give proper admixture of oxygen to said gas. This mixture passes to the primary mixing-chamber, around the pipe t, to the plate a. As it passes through the openings e c it ignited by the haml-torch, and thereafter this flame acts upon the vaporizer throughout its entire length to generate the gas required to supply said primary burner and render it permanent and self-sustaining and prevent the condensation of said gases in passing from the vaporizer Z1 to the primary mixing-chamber (2 to a great extent. Thereafter when it is desired to make steam it is merely necessary to feed oil through the pipe i to the secondary-burner vaporizer. The initial charge for the secondary burner and the supply of gas in case of the failure of the flame of the said burner to act at all times to produce gas is produced by the action of the primary-burner flame upon the superheating-retort vi the gases thus produced passing to the nozzle z and mixing-tube j, where they are given an admixture of air and charged into the mixing-chamber (Z. Thence they pass through the slots I) and are ignited from the primary burner. .l.hereafter the oil is vaporized in the vaporizing-retortvi, and these vapors are superheated in the superhcatingretort a? to secure satisfactory results. The action of the primary and of the secondary burner are more fully referred to in my aforesaid application, in which this particular structure is broadly claimed.

As the burner becomes heated I. have found that the vapors generated within the primaryburner vaporizer b are, owing to the mixingtube being arranged entirely within the combustion-chamber f, prevented from condensing on account of contact with chilled pipes and that the air passing through the inlet-pipe Z is well heated when lirst mixed with the gases or when passing through the tube Z, so that the mixture is more perfect and its combustibility is increased. The air for admixture with the gases being drawn from ditl'erent sources also appears to increase the efficiency of the burner.

it has been found that the arrangement of a central elongated primary -burner plate avoids to a great extent the dangers of extinguislunent of the primary-burner '[iame from the back draft resulting from the ignition of the secondary burner-flame therefrom and that the hood lb may be dispensed with without materially affecting the utility of the burner. ('Jlreater efficiency, however, results from the use of this hood, and 1 preferably use same.

The arrangement of primary burner and vaporizer herein shown and described has been found to meet requirements to which a burner wherein the said elements occupied greater space would be entirely unsuited and to possess very desirable features in the relation shown.

Making the primary-burner vaporizer lid removable possesses the advantage of a quick exchange of Vaporizers in case of a bad clogging which would require means not at hand to clear away.

The modification shown in Fig. 5 operates substantially as the mixing-tube and air-inlet Z, except that there is an accumulation of heated air in the air-chamber thereof and possesses the same advantages, but to a less extent.

it is not my intention to claim, broadly, in this application the general arrangement of burners acting as herein described,the subjectmatter of this invention residing more particularly in the arrangement of parts peculiar to the construction shown and described.

I. do not intend to limit this invention to the exact details of construction, as these may be varied without departing from the spirit or scope of this invention.

Having described my invention, what 1 claim as new, and desire to have protected by Letters Patent, is-

1. In a burner, the combination ofa burnerplate, a mixing-chamber therefor, a combustion-chamber and a fuel-supply system therefor comprising a vaporizer disposed directly above said burner-plate and substantially parallel therewith,a mixing-tn be arranged within but having no communication with said combustion-chamber and communicating with said mixing-chamber, said mixing-tube being substantially parallel with and above said mixing chamber, an air-inlet passing through said mixing-chamber establishing communication between said mixing-tube and the atmosphere, said vaporizer extending into said mixingtube and terminating above said inlet and connections between said vaporizer and a source of oil-supply.

2. In a burner, the combination of a burnerplate, a mixing-chamber therefor, a combustion-chamber and a fuel-supply system therefor comprising a removable vaporizer disposed directly above said burnerdate and substantially parallel therewith, a mixingtube arranged within but having no communication with said combustion-eharnber and com municating with said mixing-ehamber, said mixing-tube being substantially parallel with and above said mixing-chamber, an air-inlet passing through said mixing-chamber establishing communication between said mixingtube and the atmosphere, said vaporizer extending in to said mixing-tube and terminating above said inlet and connections between said vaporizer and a source of oil-supply.

3. In a burner, the combination of a secondary burner and a primary burner,having separate mixing'chambers and a common combustion chamber, a secondary burner 'fuel'supply system comprising a continuous pipe forming a vaporizing-retort and a superheating-retort disposed directly above said burners respectively, connections between said vaporizing-retort and a source of oil-supply and between said superheating-retort and the mixing-chamber of said secondary burner and a primary-burner fuel-supply system comprising a vaporizer disposed directly above said primary burner and substantially parallel therewith, a mixing-tube arranged within but having no communication with said combustion-chamber and communicating with said primary-burner mixing-chamber, an air-inlet passing through said mixing-chambers establishing communication between said mixing-tube and the atmosphere, said vaporizer extending into said mixing-tube and terminating above said inlet and connections between said vaporizer and a source of oil-supply.

4. In a burner, the combination of a secondary burner and a primary burner,having separate mixing-chambers and a common combustion-chamber, a secondaryburner fuel-supply system comprising a continuous pipe forming a vaporizing-retort and a superheating'retort disposed directly above said burners respectively, connections between said vaporizing-retort and a source of oil-supply and between said superheating-retort and the mixing-chamber of said secondary burner and a primary-burner fuel-supply system comprising a removable vaporizer disposed directly above said primary burner and substantially parallel therewith, a mixing-tube arranged within but having no communication with said combustion-chamber and communicating with said primary-burner mixing-chamber, an airinlet passing through said mixing-chambers establishingcommunication between said mixing-tube and the atmosphere, said vaporizer extending into said mixing-tube and terminating above said inlet and connections between said vaporizer and a source of oil-supply.

5. In a burner, the combination of a secondary burner and a primary biu'ner,havingseparate mixing-chambers and a common combustionchamber, a secondaryburner fuel-supply system comprising a continuous pipe forming a vaporizing-retortand a superheating-retort disposed directly above said burners respectively, connections between said vaporizing-retort and a source of oil-supply and between said superheating-retort and the mixing-chamber of said secondary burner, a pria vaporizer disposed directly above said primary burner and substantially parallel therewith, a mixing-tube arranged within buthaving no communication with said combustionchamber and communicating with said primary-burner mixing-chambers, an air-inlet passing through said mixing-chambers establishing communication between said mixingtube and the atmosphere, said vaporizer extending into said mixing-tube and terminating above said inlet and connections between said vaporizer and a source of oil-supply and a hood disposed above said primary burner, said vaporizer and said superheating-retort.

6. In a burner, the combination of a secondary burner and a primary burner, having separate mixing-chambers and a common combustion-chamber, a secondary-burner fuel-supply system comprising a continuous pipe forming a vaporizing-retort and a superheating-retort disposed directly above said burners respectively, connections between said vaporizing-retort and a source of oil-supply and between said superheating-retort and the mixing-chamber of said secondary burner, a primary-burner fuel-suppl y system comprising a vaporizer disposed directly above said primary burner and substantially parallel therewith, a

mixing-tube arranged within but having nocommunication with said combustion-chamber and communicating with said primary-burner mixing-chamber, an air-inlet passing through said mixing-chambers establishing communication between said mixing-tube and the atmosphere, said vaporizer extending into said mixing-tube and terminating above said inlet and connections between said vaporizer and a source of oil-supply, and a hood having a plurality of openings therein-and disposed above said primary burner, said vaporizer and said superheating-retort.

7. In a burner, the combination of asecondary burner and a primary burner, having separate mixing-chambers and a common combustion-chamber, a secondary-burner fuel-supply system comprisinga continuous pipe forming a vaporizing-reto rt and a superheating-retort disposed directly above said burners respectively, connections between said vaporizing-retort and a source of oil-supply and between said superheating-retort and the mixing-chamber of said secondary burner, a primary-burner fuel-supply system comprising a vaporizer disposed directly above said primary burner and substantially parallel therewith, a mixing-tube arranged within but having no communication with said combustion-chamber and communicating with said primary-burner mixing-chamber, an air-inlet passing through said mixing-chambers establishing communication between said mixing-tube and the atmosphere, said vaporizer extending into said mixing-tube and terminating above said inlet mary-burner fuel-supply system comprising and connections between said vaporizer and a source of oil-supply, and a removable hood having a plurality of openings therein and disposed above said primary burner, said vaporizer and said superheating-retort.

8. In a burner, the combination of a secondary-burner. plate having an opening approximately centrally thereof, and a mixing-chainber therefor, an elongated primary burner plate having a mixing-chamber seated in said I O opening and detachably secured to said secondary burner, said primary and said secondary burners having a common combustion-chamber, a secondary-burner fuel-supply system comprising a continuous pipe forming a vaporizing-retort and a sn 'ierheating-retort disposed directly above said burnersrespectively, connections between said vaporizing-retort and a source of oil-supply and between said superheating-retort and the mixing-chamber of 20 said secondary burner and a primary-burner JOHN N. LEAOl-I.

\Vitnesses:

N. L. FRo'rI-IINeHAM, A. A. ASI-IMAN. 

